KL 1800 then FR 421 at Schiphol
Düsseldorf → Amsterdam → Dublin
Timetable, Amsterdam time
12:35KL 1800 from Düsseldorf at the gate
11:40FR 421 to Dublin leaves the gate
23 h 05 apart on the timetable, overnight
FR 421 leaves 23 h 05 after KL 1800 arrives on the timetable: more than half a day, so not a connection we count.